100221210191 has 8 divisors (see below), whose sum is σ = 101139807600. Its totient is φ = 99306598720.

The previous prime is 100221210163. The next prime is 100221210197. The reversal of 100221210191 is 191012122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100221210191 - 2³⁰ = 99147468367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221210197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945956 + ... + 1046553.

It is an arithmetic number, because the mean of its divisors is an integer number (12642475950).

Almost surely, 2^100221210191 is an apocalyptic number.

100221210191 is a deficient number, since it is larger than the sum of its proper divisors (918597409).

100221210191 is a wasteful number, since it uses less digits than its factorization.

100221210191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992969.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 100221210191 its reverse (191012122001), we get a palindrome (291233332192).

The spelling of 100221210191 in words is "one hundred billion, two hundred twenty-one million, two hundred ten thousand, one hundred ninety-one".